IV. Fill in the blanks with prepositions where required:1. The doctor supposed that the sudden eruption was associated… the large dose… streptomycine which was administered … the patient. 2. Thanks… the doctor's wonderful bedside manner and the thorough care… the whole medical personnel the patient survived… a very complex operation. 3. The immunity … diphtheria results… the vaccination … a prophylactic vaccine. 4. Many infectious diseases have been stamped…our country thanks… the great achievements … Soviet medical science and prophylactic measures. 5. …the beginning. . . . . . the fourth day and sometimes later the characteristic eruption appears… the skin… case… measles; . . . . . first this eruption is marked… the brow, cheeks, chin and also… the ears and the neck. 6. Profuse abdominal bleeding is often characteristic… a perforated stomach ulcer. 7. …favourable cases…measles the period… convalescence is rather rapid and a patient may feel well after the rash has disappeared. 8. . . . . . . one … our lectures… infectious diseases we learned that meningitis is caused … Meningococcus intracellularis. This is disease was … first described… the nineteenth century. 9. If a doctor determines the presence… some dull heart sounds he may be sure … some functional impairments. 10. . . . . . . . this patient's family history we found out that he had suffered. . . . . malaria while living… a tropical region. 11. Endocarditis and myocarditis may occur as complications… meningitis. 12. The use … antibiotics and sulfonamides is an effective measure… the treatment … many infectious diseases.